As noted I have a 2007 Subaru Outback with a V6 3.0L engine. It appears to be front-wheel drive. The head gasket(s) need replaced and possibly the cylinder heads. I used to work on cars 25-30 years ago (now I do software development, hands stay cleaner) and have all the tools I need. I've also got the space to lay out parts and bolts and another car so no time crunch.
Due to a dumb mistake on my part (also a good quality is admitting my mistakes) related to the thermostat, the engine overheated and I'll need to a least replace the gaskets but probably re-machine the heads or just replace with remans.
Is this a feasible operation for me, and given that an experienced mechanic said 99% of the problems are going to be in the head(s), and approximately how much in labor would I save by doing this?